Okay, so let's imagine you have a toy car and you want to see how fast it can go. You start by pushing it gently and it goes a little bit faster, then you push it harder and it goes even faster, right?
A Solomon curve is like that. It's a graph that shows you how much of something you can sell, depending on how much you charge for it. The more you charge, the fewer people will buy it, but the people who do buy it will pay more. The less you charge, the more people will buy it, but they will each pay less.
Basically, the Solomon curve helps you find the perfect balance between price and sales. If you charge too much, you might not sell enough to make a profit. If you charge too little, you might sell too much and not be able to keep up with demand.
So, just like with your toy car, you have to find the right amount of force (or price) to apply to get the best results. The Solomon curve is a way to help you figure that out!